2021DIN EN ISO 15685:2021 Soil quality - Determination of potential nitrification and inhibition of nitrification - Rapid test by ammonium oxidation (ISO 15685:2012); German version EN ISO 15685:2020
1970DIN EN ISO 15685 E:2020-02 Determination of soil potential nitrification and nitrification inhibition using rapid test of ammonia oxidation (draft)